Mercurial > hg > orthanc
view OrthancServer/Resources/Samples/CppHelpers/Logging/ILogger.h @ 5925:9704181280c6 find-refactoring
static linking against SQLite on macOS: reverted changeset 3a5b8ed2d859
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Mon, 16 Dec 2024 14:31:04 +0100 |
parents | f7adfb22e20e |
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/** * Orthanc - A Lightweight, RESTful DICOM Store * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2023 Osimis S.A., Belgium * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. **/ #pragma once #include <string> #include <vector> #include <boost/algorithm/string.hpp> #include <boost/thread.hpp> namespace OrthancHelpers { inline std::string ShortenId(const std::string& orthancUuid) { size_t firstHyphenPos = orthancUuid.find_first_of('-'); if (firstHyphenPos == std::string::npos) { return orthancUuid; } else { return orthancUuid.substr(0, firstHyphenPos); } } // Interface for loggers providing the same interface // in Orthanc framework or in an Orthanc plugins. // Furthermore, compared to the LOG and VLOG macros, // these loggers will provide "contexts". class ILogger { public: virtual ~ILogger() {} virtual void Trace(const char* message) = 0; virtual void Trace(const std::string& message) = 0; virtual void Info(const char* message) = 0; virtual void Info(const std::string& message) = 0; virtual void Warning(const char* message) = 0; virtual void Warning(const std::string& message) = 0; virtual void Error(const char* message) = 0; virtual void Error(const std::string& message) = 0; virtual void EnterContext(const char* message, bool forceLogContextChange = false) = 0; virtual void EnterContext(const std::string& message, bool forceLogContextChange = false) = 0; virtual void LeaveContext(bool forceLogContextChange = false) = 0; }; // Implements ILogger by providing contexts. Contexts defines // the "call-stack" of the logs and are prepended to the log. // check LogContext class for more details class BaseLogger : public ILogger { #if ORTHANC_ENABLE_THREADS == 1 boost::thread_specific_ptr<std::vector<std::string>> contexts_; #else std::auto_ptr<std::vector<std::string>> contexts_; #endif bool logContextChanges_; public: BaseLogger() : logContextChanges_(false) { } void EnableLogContextChanges(bool enable) { logContextChanges_ = enable; } virtual void EnterContext(const char* message, bool forceLogContextChange = false) { EnterContext(std::string(message), forceLogContextChange); } virtual void EnterContext(const std::string& message, bool forceLogContextChange = false) { if (!contexts_.get()) { contexts_.reset(new std::vector<std::string>()); } contexts_->push_back(message); if (logContextChanges_ || forceLogContextChange) { Info(".. entering"); } } virtual void LeaveContext(bool forceLogContextChange = false) { if (logContextChanges_ || forceLogContextChange) { Info(".. leaving"); } contexts_->pop_back(); if (contexts_->size() == 0) { contexts_.reset(NULL); } } protected: virtual std::string GetContext() { if (contexts_.get() != NULL && contexts_->size() > 0) { return "|" + boost::algorithm::join(*contexts_, " | ") + "|"; } else { return std::string("|"); } } }; /* RAII to set a Log context. * Example: * ILogger* logger = new OrthancPluginLogger(..); * { * LogContext logContext(logger, "A"); * { * LogContext nestedLogContext(logger, "B"); * logger->Error("out of memory"); * } * } * will produce: * |A | B| out of memory * * furthermore, if LogContextChanges are enabled in the BaseLogger, * you'll get; * |A| .. entering * |A | B| .. entering * |A | B| out of memory * |A | B| .. leaving * |A| .. leaving */ class LogContext { ILogger* logger_; bool forceLogContextChange_; public: LogContext(ILogger* logger, const char* context, bool forceLogContextChange = false) : logger_(logger), forceLogContextChange_(forceLogContextChange) { logger_->EnterContext(context, forceLogContextChange_); } LogContext(ILogger* logger, const std::string& context, bool forceLogContextChange = false) : logger_(logger), forceLogContextChange_(forceLogContextChange) { logger_->EnterContext(context, forceLogContextChange_); } ~LogContext() { logger_->LeaveContext(forceLogContextChange_); } }; }